Polishing-machine.



No. 737,621. v PATENTED SEPT. 1, 1903. H. L. HASKELL. POLISHING MAGHINE.

APPLICATION FILED FEB. 27. 1903.

ND MODEL. V2 SHEETS-SHEET 1.

Wit esses:

msagm/ @Ma 62/27 UNlTED STATES Patented September 1, 1903.

HENRY L. HASKELL, OF LUDINGTON, MICHIGAN.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 737,621, datedSeptember 1, 1903.

Application filed February 27,1903. Serial N0.145,373. (No model.)

TootZZ whom it nuty concern:

Be it known that I, HENRY L. HASKELL, a citizen of the United States,residing at the city of Ludington, in the county of Mason and State ofMichigan, have invented certain new and useful Improvements inPolishing- Machines, of which the following is a specification.

This invention relates to improvements in polishing or sanding machines.

The objects of the invention are, first, to provide an improvedpolishing or sanding machine in which the sanded paper or polishingmaterial is held yieldingly in contact with the surface to be polished;second, to provide an improved polishing or sanding machine by whichirregular surfaces may be satisfactorily smoothed or polished; third, toprovide an improved polishing or sanding machine by which irregularsurfaces may be polished or smoothed satisfactorily without specialadjustment of the machine for the particular work in hand; fourth, toprovide an improved polishing or sanding machine by which irregularsurfaces may be smoothed or polished without injury thereto ordestroying the sharp outlines thereof; fifth, to provide an improvedsanding or polishing machine which is simple and economical to produceand use.

Further objects relating to details of construction will fully appear inthe detailed description to follow. 7

The devices and means by which the objects of my invention areaccomplished will fully appear from the detailed description to follow.

The invention is definitely pointed out in the claims.

A structure embodying the features of my invention is fully illustratedin the accompanying drawings, forminga part of this specification, inwhich- Figure 1 is a detail side elevation view of my improved polishingor sanding machine, portions being broken awayand sectioned to show thearrangement of the parts. Fig. 2 is an end elevation View, partially insection, taken on a line corresponding to line 2 2 of Fig. 1. Fig. 3 isan enlarged detail sectional View taken on a line corresponding to line3 3 of Fig. 1. Fig. 4. is adetail sectional View taken on a linecorresponding to line at 4 of Fig.3. Fig. 5 is an enlarged plan view ofa strip of the abrasive material 0. Fig. 6 is an enlarged plan view of amodified form of the abrasive strip 0. of the air-delivery device. Fig.8 is an enlarged detail view showing the manner of supporting theabrasive material. Fig. 9 is an enlarged view of a backing-strip c forthe abrasive strips. Fig. 10 is an enlarged plan view of the wrench ortool J for use in placing the abrasive strips in the machine. Fig. 11 isa plan view of a modified form of abrasive strip wherein sanded stringsare utilized.

In the drawings the sectional views are taken looking in the directionof the little arrows at the ends of the section-lines, and similarletters of reference refer to similar parts throughout the severalviews.

Fig. 7 is an enlarged view Referring to the lettered parts of thedrawings, a suitable base or frame A is provided. The shaft Bissupported in suitable bearings A on this base. This shaft 13 is providedwith a suitable driving-pulley B. This portion of the machine may be ofany desired form to suitably support the parts. On the shaft B is awheel 0. This wheel is made up of a disk-like plate 0' on the inner sideand a disk-like ring 0 on the outer side, which are secured together byblocks a, arranged at intervals, so that the peripheryof the wheel isdivided into a series of open-ended chamhers. A pipe D is arranged todeliver air under pressure into the inner ends of the chainberssuccessively as the Wheel is revolved. The blocks Ct are preferablycastings and are provided with oppositely-projecting ears or lugs a,perforated to receive bolts or rivets, by means of which the blocks aresecured in position.

Secured to the partition-blocks Ct toward their inner endsarespring-jaws b, which are adapted to clamp upon the strips of abrasivematerial 0, preferably of sandpaper, whereby these strips are retainedin position upon the periphery of the wheel. The strips 0 are ofsomewhat greater length than the chambers, so that they form a baggingcover therefor. To prevent unnecessary wear upon the abrasive material,I clamp strips 6 of leather or other flexible material into the jaws I)along with the abrasive material. As a convenient means of opening thespring-jaws b I provide a tool J, which has a blade of oval shape, so

that it may be inserted between the jaw h and terial is held in contactwith the work as the p are revolved under the delivery-nozzle.

polishing-wheel is revolved by a blast of air, which is deliveredthrough the pipe D into the peripheral chambers of the wheel, so thatthe sanded paper is'held yieldingly in contact with the work thereby.The air-delivery pipe is preferably provided witha fiat nozzle D,adapted to deliver air the full width of the chamber.

The partition-blocks a are preferably arranged at an angle, asillustrated in Fig. 1, as they offer less resistance to the air as theyThe abrasive material is slitted into strips, as at f, (see Fig. 5,) sothat it readily adjusts itself to the contour of the work. To strengthenand add to the durability of the abrasive material, I provide abacking-strip c, which is clamped by the jaws I) along with the abrasivematerial. To protect sharp or fine projections on the work, I provideguard-strips I, which are adjustably supported above the same bysuitable brackets, as I, as appears in Figs. 1 and 2. These guards arepreferably narrow strips of metal and while they satisfactorily protectthe sharp projections do not interfere with the polishing of the sidesand the balance of the work. I have illustrated but one guard; but it isevident .In Fig.6 I have illustrated a modified form of the abrasivematerial, it beingthere slitted, as indicated at f. In Fig. 11 afurthermodification of the abrasive material is shown,

,consisting of a series of sanded strings d,

which are secured to suitable end pieces d, adapted to be clamped by thejaws b. I find sanded paper as the abrasive material to be entirelysatisfactory, although other material might be preferred for particularuses.

I have illustrated and described my improved sanding or polishingmachine in the form preferred by me on account of its simplicity andeconomy of manufacture and durability in use. I am aware, however, thatit is capable of very great variation in structural details andarrangement without de parting from my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a polishing-machine, the combination of a suitable support; ashaft; a wheel Oconsisting of a disk-like plate 0 and a disk-like ring0; partition-blocks a secured between I said plate and ring, wherebysaid wheel is divided into a series of open-ended chambers; anair-delivery pipe D adapted to deliver air into the inner ends of saidchambers successively as the said wheel is revolved; strips of abrasivematerial slitted longitudinally; backing-strips for said abrasivematerial, also slitted; spring-jaws I) carried by said partition-blocksa adapted to clamp the ends of said strips of abrasive material; a tableadapted to support Work beneath said wheel; and a work-guard I supportedbeneath said wheel, all coacting for the purpose specified.

2. In a polishing-machine, the combination of a suitable support; ashaft; a wheel 0 consisting of a disk-like plate 0 and a disk-like ring(3"; partition-blocks a secured between said plate and ring, wherebysaid wheel is divided into a series of open-ended chambers;

an air-delivery pipe D adapted to deliver air tion-blocks 0. adapted toclamp the ends of said strips of abrasive material; and a table adaptedto support work beneath the said wheel, all coacting for the purposespecified.

3. In a polishing-machine, the combination of a suitable support; ashaft; a wheel Coonsisting of a disk-like plate 0 and a disk-like ring0'; partition-blocks a secured between said plate and ring, whereby saidwheel is divided into a series of open-ended chambers; an air-deliverypipe D adapted to deliver air into the inner ends of said chamberssucces sively as the said wheel is revolved; strips of abrasive materialslitted longitudinally; spring-j aws I) carried by said partition-blocksa adapted to clamp the ends of said strips of abrasive material; a tableadapted to support work beneath said wheel; and a Work-guard I supportedbeneath said polishing-wheel, all coacting for the purpose specified.

4. In apolishing-machine, the combination of a suitable support; ashaft; a wheel 0 consisting of a disk-like plate 0 and a disk-like ring0; partition-blocks a secured between said plate and ring, whereby saidwheel is divided into a series of open-ended chambers;

an air-delivery pipe D adapted to deliver air into the inner ends ofsaid chambers successively as the said wheel is revolved; strips ofabrasive material slitted longitudinally; spring-jaws I) carried by saidpartition-blocks a adapted to clamp the ends of said strips of abrasivematerial; and a table adapted to support work beneath said wheel, allcoacting for the purpose specified.

5. In a polishing-machine, the combination of a suitable support; ashaft; a wheel 0 consisting of a disk-like plate 0 and a disk-like ring0; partition-blocks secured between said plate and ring whereby saidwheel is divided intoa series of open-ended chambers; an air-deliverypipe D adapted to deliver air into the inner ends of said chamberssuccessively as the said Wheel is revolved; strips of abrasive materialslitted longitudinally, and means for detachably securing the saidstrips of abrasive material over the outer ends of said chambers; and awork-guard I supported beneath said polishing-wheel, coasting asspecified.

6. In a polishing-machine, the combination of a suitable support; ashaft; a wheel 0 consisting of a disk-like plate 0' and a disk-like ringC; partition-blocks secured between said plate and ring whereby saidwheel is divided into a series of open-ended chambers; an air-deliverypipe D adapted to deliver air into the inner ends of said chamberssuccessively as the said wheel is revolved; strips of abrasive materialslitted longitudinally; and means of detachably securing said strips ofabrasive material over the outer ends of said chambers, all coacting forthe purpose specified.

7. In a polishing-machine, the combination of a suitable support; awheel; a series of open-ended chambers in the periphery of said wheel;means for delivering air under pressure into the inner ends of saidchambers successively as the wheel is revolved; strips of flexibleabrasive material secured over the outer ends of said chambers; suitablemeans for supporting the material to be operated upon; and a work-guardI supported between open-ended chambers in the periphery of said wheel;means for delivering air under pressure into the inner ends of saidchambers successively as the wheel is revolved; narrow strips offlexible abrasive material secured over the outer ends of said chambers;and suitable means for supporting the material to be operated upon,coacting for the purpose specified.

9. In a polishing-machine, the combination of a suitable support; awheel having a series of outwardly-opening chambers in'its periphery;means for delivering air under pressure to said chambers; and strips offlexible abrasive material adapted to receive the air from saidchambers, for the purpose specified.

10. In a polishing-machine, the combination of a suitable support; astrip of flexible abrasive material carried thereby; and means fordelivering air under pressure against said abrasive material, whereby itis held in contact with the work.

11. In a polishing-machine, the combination ofa suitable support;flexible abrasive HENRY L. HASKELL. [L.

Witnesses:

ARTHUR M. JOHNSON, JESSIE wool).

